Effects of different protein levels on growth performance and body composition of spotted scat, Scatophagus argus
A 60-day experiment was undertaken in circle plastic tanks with a volume of 0.2 m3 using a separate circulating filtration system at 400 L/h to determine the optimal dietary protein level for the growth performance, protein efficiency rate (PER), and body composition of Scatophagus argus. Experiment...
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The Korean Society of Fisheries and Aquatic Science
2025-01-01
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| Series: | Fisheries and Aquatic Sciences |
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| Online Access: | http://www.e-fas.org/archive/view_article?doi=10.47853/FAS.2025.e1 |
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| author | Dieu Vo Thanh Duc Nguyen Hang Thi Thuy Tran Hung Duc Pham Huy Van Nguyen |
| author_facet | Dieu Vo Thanh Duc Nguyen Hang Thi Thuy Tran Hung Duc Pham Huy Van Nguyen |
| author_sort | Dieu Vo |
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| description | A 60-day experiment was undertaken in circle plastic tanks with a volume of 0.2 m3 using a separate circulating filtration system at 400 L/h to determine the optimal dietary protein level for the growth performance, protein efficiency rate (PER), and body composition of Scatophagus argus. Experimental diets using different materials were prepared in triplicates with different crude protein (CP) levels of 30%, 34%, 38%, and 42% which were designated as CP30, CP34, CP38, and CP42, respectively. The results showed that higher protein levels in diets increased the growth and reduced the feed conversion ratio (FCR) of fish (p < 0.05), however, no significance was found in growth rates and FCR of fish between treatment CP38 and CP42 (p > 0.05). On the contrary, PER increased with increasing the protein levels of diets from CP30 to CP38 (p < 0.05). PER was lower at 30% or 42% protein contents in the diets than that of 34% or 38% protein treatments (p < 0.05, and no significant difference in PER was found between CP34 and CP38 (p > 0.05). There were no significant differences in survival rates of fish among the treatments with more than 95% (p > 0.05). The second order polynomial regression analysis showed that the optimal dietary protein level of spotted scat was 43.7% (R2 = 0.96). Further studies about amino acids of the diets as well as body compositions should be conducted to elucidate for better dietary formulation of S. argus. |
| format | Article |
| id | doaj-art-b355bec74b044c628229c6271e462fa8 |
| institution | Kabale University |
| issn | 2234-1757 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | The Korean Society of Fisheries and Aquatic Science |
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| series | Fisheries and Aquatic Sciences |
| spelling | doaj-art-b355bec74b044c628229c6271e462fa82025-02-10T08:20:28ZengThe Korean Society of Fisheries and Aquatic ScienceFisheries and Aquatic Sciences2234-17572025-01-012811910.47853/FAS.2025.e1Effects of different protein levels on growth performance and body composition of spotted scat, Scatophagus argusDieu Vo0Thanh Duc Nguyen1Hang Thi Thuy Tran2Hung Duc Pham3Huy Van Nguyen4University of Agriculture and Forestry, Hue University, Hue City 530000, VietnamUniversity of Agriculture and Forestry, Hue University, Hue City 530000, VietnamUniversity of Agriculture and Forestry, Hue University, Hue City 530000, VietnamInstitute of Aquaculture, Nha Trang University, Khánh Hòa 650000, VietnamUniversity of Agriculture and Forestry, Hue University, Hue City 530000, VietnamA 60-day experiment was undertaken in circle plastic tanks with a volume of 0.2 m3 using a separate circulating filtration system at 400 L/h to determine the optimal dietary protein level for the growth performance, protein efficiency rate (PER), and body composition of Scatophagus argus. Experimental diets using different materials were prepared in triplicates with different crude protein (CP) levels of 30%, 34%, 38%, and 42% which were designated as CP30, CP34, CP38, and CP42, respectively. The results showed that higher protein levels in diets increased the growth and reduced the feed conversion ratio (FCR) of fish (p < 0.05), however, no significance was found in growth rates and FCR of fish between treatment CP38 and CP42 (p > 0.05). On the contrary, PER increased with increasing the protein levels of diets from CP30 to CP38 (p < 0.05). PER was lower at 30% or 42% protein contents in the diets than that of 34% or 38% protein treatments (p < 0.05, and no significant difference in PER was found between CP34 and CP38 (p > 0.05). There were no significant differences in survival rates of fish among the treatments with more than 95% (p > 0.05). The second order polynomial regression analysis showed that the optimal dietary protein level of spotted scat was 43.7% (R2 = 0.96). Further studies about amino acids of the diets as well as body compositions should be conducted to elucidate for better dietary formulation of S. argus. http://www.e-fas.org/archive/view_article?doi=10.47853/FAS.2025.e1Scatophagus argusProtein levelsGrowth and survival ratesBody composition |
| spellingShingle | Dieu Vo Thanh Duc Nguyen Hang Thi Thuy Tran Hung Duc Pham Huy Van Nguyen Effects of different protein levels on growth performance and body composition of spotted scat, Scatophagus argus Fisheries and Aquatic Sciences Scatophagus argus Protein levels Growth and survival rates Body composition |
| title | Effects of different protein levels on growth performance and body composition of spotted scat, Scatophagus argus |
| title_full | Effects of different protein levels on growth performance and body composition of spotted scat, Scatophagus argus |
| title_fullStr | Effects of different protein levels on growth performance and body composition of spotted scat, Scatophagus argus |
| title_full_unstemmed | Effects of different protein levels on growth performance and body composition of spotted scat, Scatophagus argus |
| title_short | Effects of different protein levels on growth performance and body composition of spotted scat, Scatophagus argus |
| title_sort | effects of different protein levels on growth performance and body composition of spotted scat scatophagus argus |
| topic | Scatophagus argus Protein levels Growth and survival rates Body composition |
| url | http://www.e-fas.org/archive/view_article?doi=10.47853/FAS.2025.e1 |
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